/*
  74HC595 Arduino Shift Register example for Wokwi
  Copyright (C) 2021, Uri Shaked
  
  License: MIT.
*/

const int dataPin = 2;   /* DS */
const int clockPin = 3;  /* SHCP */
const int latchPin = 4;  /* STCP */

const int dataPin2 = 5;   /* DS */
const int clockPin2 = 6;  /* SHCP */
const int latchPin2 = 7;  /* STCP */



const int zero = B10100000;
const int one = ~B00000101;
const int two = B11000100;
const int three = ~B00101111;
const int four = ~B01100101;
const int five = ~B01101110;
const int six = B10000001;
const int seven = ~B00000111;
const int eight = B10000000;
const int nine = B10010000;

int timer = 0;

void setup() {
  for (int i = 2; i <= 7; i++) {
      pinMode(i, OUTPUT);
  }

}

int num[10] = {zero, one, two, three, four, five, six, seven, eight, nine};
int col[4] = {B11000000, B10100000, B10010000, B10001000};
void loop() {
    for (int j = 0; j < 4; j++) {
        for (int i = 0; i < 10; i++) {
            updateLED(col[j], num[i]);
        }
    }
}

void updateLED(int disp, int pattern){
  digitalWrite(latchPin2, LOW);
  shiftOut(dataPin2, clockPin2, LSBFIRST, disp);
  digitalWrite(latchPin2, HIGH);

  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(300);
}